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NEMATICIDAL ACTION OF SOME EDIBLE CROPS BY N. C. SUKUL, P. K. DAS and G. C. DE Department of Zoology, Visva-Bharati University, Santiniketan, West Bengal, India Extracts of ginger, garlic and chilli pepper showed strong nematicidal action by killing Meloidogyne incognita and other species of soil nematodes in 40 min. Ladies' finger plants inoculated with M. incognita and then treated with the aqueous extracts of these plant materials showed marked increase in growth and decreased root galling. The population of M. incognita was considerably reduced in the pots treated with the plant extracts. The garlic extract was highly phytocidal but most effective in reducing Meloidogyne infestation of ladies' finger. Ginger showed mild phyto- toxicity and capsicum none. Besides their nematicidal activity the plant extracts served as a manure. The use of non-persistent pesticides such as plant substances is often recommended in view of the growing problem of soil pollution by the large scale use of persistent pesticides like chlorinated hydrocarbons (Ehrlich & Ehrlich, 1972), but nematicidal activity has only been demonstrated in a few plants like Brassica (Triffitt, 1929, 1930; Ellenby, 1951), Tagetes (Slootweg, 1956; Oostenbrink et al., 1958), Asparagus (Rohde & Jenkins, 1958) and Polygonum (Sukul, 1970
Nematologica – Brill
Published: Jan 1, 1974
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